Problem with Logitech Unify Bluetooth adapter

I am running Mint Debian on a ThinkPad, the build in BT has some problem some times not working, so that I used a Logitech Unify adapter. I used Solaar to setup the adapter to use with different Logitech keyboard and worked, but when I tried to pair with a Bluetooth speaker it doesn't recognize it, I don't know if that adapter only works with Logitech devices or not, any comment ?